Introduction to Plasma Cutter and Compressed Air
A plasma cutter uses compressed air to create an electrical arc between the cutter and the material being cut. This arc then heats and vaporizes the material.
Importance of Compressed Air for Plasma Cutting
- Air is essential for the arc to be focused and make precise cuts.
- It also cools the cutter preventing overheating and damage.
Compressed Air Supply for Plasma Cutter
An air compressor provides the compressed air required by a plasma cutter. The air pressure needed depends on the cutter’s amperage, typically 45-70 psi for low amperage cuts.
Types of Gases Used in Plasma Cutting
Plasma cutters use gases like air, oxygen, nitrogen, or argon to cut metal. Compressed air and nitrogen are commonly used as they are inexpensive and provide good cut quality. Oxygen offers the fastest cut speed but a rougher cut surface.
Role of Air Compressor in Plasma Cutting
An air compressor supplies compressed air which is essential for a plasma cutter to function. It helps create and direct the plasma arc that cuts metal, cools the cutter, and prevents overheating and damage.
Plasma Cutting Process
A plasma cutter operates by generating an electric arc through a stream of gas, causing the gas to become ionized plasma. This plasma is directed towards the workpiece, cutting through the material with precision and speed without the need for additional gas.
Plasma Gas Types and Effects
- Nitrogen works well as a plasma gas.
- Air provides the best results.
- CO2 also works, slightly improving cut quality over air.
- Oxygen cuts fastest but leaves a rougher surface.
Considerations for Efficient Plasma Cutting
- Proper use of air compressors is key for smooth, accurate plasma cutting.
- Regular maintenance prevents potential damage.
- Always use protective gear and keep a safe distance when operating plasma cutters.
- Plasma cutters can produce intricate shapes in CNC fabrication with a high degree of accuracy, but they generate noise and smoke. Cutting speed can be slower on thicker materials.